search process always starts from the previous segment of the scope chain and goes backward backwards until the identifier is found.(2) Scope chain:① Extending the scope chain:The following statement temporarily adds a variable object to the front end of the scope chain, and the variable object is removed after the code executes.(a) the catch block of the Try-catch statement;(b) With statement.For the WITH statement, the specified object is added to the scope chain. For a catch statement, a new
ISP_QoS learning notes 1-The Implementation of QS1-1CLI traditional method, no modular, no classification idea when using auto qs can be fine-tuned using 1-2MQCClass map definition classification Policy map contains multiple class map + default class map, 1-3 Auto QS is called on interfaces in two categories. VOIP/enterprise classifies voip traffic, with low latency and low jitter. One command is used to ha
DescriptionFarmer John prepares to expand his farm, and he is considering N (1 Input* Line 1th: one number: N* 2nd. N+1 Line: Line i+1 contains two numbers, respectively, the length and width of the land of Block IOutput* First line: The minimum feasible cost.DP Slope optimizationFor land (x1,y1) and (X2,y2), if x1≥x2 and Y1≥y2, it can be ignored (x2, y2)Sort the land in descending order of x ascending y, ignoring land that is not to be consideredF[i]=max{f[j]+x[i]*y[j+1]} (0If K is better than
identify and debug these statements. DMV listed earlier can help identify problematic queries directly.
Below are some basic query statements used to identify these problematic queries:
Excessive recompilation:
selecttop25
sql_text.text,
sql_handle,
plan_generation_num,
execution_count,
dbid,
objectid
from
sys.dm_exec_query_statsa
crossapplysys.dm_exec_sql_text(sql_handle)assql_text
where
plan_generation_num>1
orderbyplan_generation_numdesc
Inefficient
, which makes the unrecognized character appear. Solution: By request.secharacterencoding ("gb2312") the request is uniformly encoded, the normal display of Chinese is realized. The modified process.jsp code is as follows:%@ page contenttype="text/html; charset=gb2312 "%> %Request.secharacterencoding ("gb2312");%>html> head> title> JSP's Chinese processing title> Meta http-equiv= "content-type" content= "text/html; charset=gb2312 "> head> body> %=request.getparameter ("name")%>body> htm
In jquery, Ajax requests to send post are convenient, but in Vue projects, the introduction of jquery is no longer appropriate.var This var data = { filter:'-_id '}$.ajax ({ URL:' http://localhost:3000/api/goods/get ') , type:' post ', data:data, dataType:' json ', success: function(res) { =res.data } )There are two places to pay great attention to post requests in Axios:To set the appropriate request header, generally use x-www-form-u
/** First Step * Configure the switch between the compilation environment and the on-line environment * BASEURL: Domain name address * Routermode: Route mode * Imgbaseurl: The domain name where the picture is located **/Let Host= ' '; let Routermode= ' Hash ';//Let Imgbaseurl;if(Process.env.NODE_ENV = = ' development ') {Host= ' http://test.xxx.com ';//test Environment Host //imgbaseurl = ' http://cangdu.org:8001/img/'; If the picture needs to be placed on a third-party platform, you can chan
Encoding and decoding:Python2 usage: Urllib.urlencode () encodingUrlparse.parse_qs () decodingPython3 usage:Urllib.parse.parse_qs () decodingRole: 1) Convert dictionary data to URL encoding 2) Use A) encode the URL parameters b) Encode the form data on the postInstance:python2.xImport UrllibImport UrlparseDef urlencode (): params = {' score ': ', ' name ': ' Reptile base ', ' comment ': ' Very good '} Urllib.urlencode (params) # # #编码 Print (
These days in the use of Vue Axios send GET request is very handy, but when sending a POST request is always in the successful callback function inside the return parameter does not exist, then wondered, after looking at the data, finally got the solution, here to do a summary:First of all, we use the NPM install Axios will be installed by default QS, so we have to introduce QS into the Axios, and then need
);//95This result is consistent with the result of the first example.V. Break and Continue statements5.1break statement:1 var num = 0; 2 for (var i = 1; i ) {3 if (i%5==0) {4 Break ; 5 }6 num++; 7 }; 8 alert (num);//4Break statement jumps to alert statement after execution5.2continue statement:1 var num = 0; 2 for (var i = 1; i ) {3 if (i%5==0) {4 continue; 5 }6 num++; 7 }; 8 alert (n
function BuildUrl () {var qs = "? Debug=true"; with (location) {var url = href + qs;}return URL; } console.log (BuildUrl ())Here, the WITH statement receives the location object, so its variable object contains all the properties and methods of the Location object, and the variable object is added to the front end of the scope chain. A variable QS is defined in t
: "test.pub" proto: http: "9091" ssh: remote_port: 3322 proto: tcp: "22"
Client Start command:
Start HTTP ngrok-config ngrok.conf start http
Start ssh ngrok-config ngrok.conf start ssh
If you start SSH, remote port 3322 is also enabled in the security rules.You can use SSH to penetrate the intranet when you are outside the network. I think this is sometimes more convenient than TeamViewer, after all, some of the
Glacier Remote control software use tutorialDate: 2015-08-17 MGS
Glacier Remote control software is mostly through remote control to achieve the spread of viruses, thereby controlling the user's computer, strong lethality, and the regular remote monitoring software network people, TeamViewer and other compare
need to replace the NXP. There is 3 solutions now:1: Vendor does reset by Teamviewer, 2:customer can reset via software, 3:there is vendor WHI CH offer the tool with reset buttonQ:would recommand to buy a EU Clone?A:depends on your budget. EU clones is more expansive, but they use HQ Parts and is more stable. So it is your choice!Q:which is the newest version for clones available at the moment?A:newest version for clones is FW. 4.036Q:which version o
Add the scheduled Task Command crontab-e in CentOSRestart teamviewer every two hours to prevent external connection to the console and execute: crontab-e // enter the timer editing page. Add the following command: control + c! Wq save 0 */2 *** teamviewer deamon restart0 */2 *** echo "Have a break now. ">/tmp/test.txt each field is separated by spaces or tabs. The format is as follows:MinutehourDay-of-month
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